To boil water at 110℃, external pressure should be:
Correct answer: B. 760-1200 torr
- A. 200-760 torr
- B. 760-1200 torr
- C. 665-670 torr
- D. 660-700 torr
Explanation
To boil water at 110 °C, the external pressure should be approximately 1.4 atm, which is equivalent to 1,064 torr.
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About Evaporation, Boiling Point and Vapour Pressure
Evaporation is the escape of higher-energy molecules from a liquid surface, while vapour pressure is the pressure exerted by vapour in equilibrium with that liquid. The topic distinguishes evaporation from boiling and relates both to temperature, intermolecular forces, surface area, atmospheric pressure and the boiling point.
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